We consider the movable antenna (MA) array-enabled wireless communication with coordinate multi-point (CoMP) reception, where multiple destinations adopt the maximal ratio combination technique to jointly decode the common message sent from the transmitter equipped with the MA array. Our goal is to maximize the effective received signal-to-noise ratio, by jointly optimizing the transmit beamforming and the positions of the MA array. Although the formulated problem is highly non-convex, we reveal that it is fundamental to maximize the principal eigenvalue of a hermite channel matrix which is a function of the positions of the MA array. The corresponding sub-problem is still non-convex, for which we develop a computationally efficient algorithm. Afterwards, the optimal transmit beamforming is determined with a closed-form solution. In addition, the theoretical performance upper bound is analyzed. Since the MA array brings an additional spatial degree of freedom by flexibly adjusting all antennas' positions, it achieves significant performance gain compared to competitive benchmarks.

翻译：我们研究了可移动天线（MA）阵列支持的协同多点（CoMP）接收无线通信系统，其中多个目的地采用最大比合并技术联合解码来自配备MA阵列的发射机发送的公共消息。我们的目标是通过联合优化发射波束成形和MA阵列的位置来最大化有效接收信噪比。尽管所提出的问题高度非凸，但我们揭示其关键在于最大化一个含MA阵列位置函数的Hermite信道矩阵的主特征值。该子问题仍为非凸问题，为此我们开发了一种计算高效的算法。随后，通过闭式解确定最优发射波束成形。此外，分析了理论性能上界。由于MA阵列通过灵活调整所有天线位置带来了额外的空间自由度，与竞争基准方案相比，它实现了显著的性能增益。